"I think that's one factor that when rain falls constantly, it causes a landslide," he told AAP on Friday.
"(We are) very sad about last night's incident. In the future, we hope there is land rehabilitation."
There's also sand mining in Songan.
That could affect the land when heavy rain falls."The disaster board has warned that heavy rain is likely to continue to fall on the region and has warned people to be cautious of landslides, floods and hurricanes.
In September last year, President Joko Widodo said illegal mining and land clearing have been major contributors to the death toll of landslides and flooding in West Java.
The worst-affected area of flooding and landslides in the region killed at least 34 people in mid-September and left more than 6300 people living in shelters.
- AAP